WeakMap::offsetExists
PHP function
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(PHP 8)
Checks whether a certain object is in the map
Description
WeakMap::offsetExists(object $object): bool
Checks whether the passed object is referenced in the map.
Parameters
objectObject to check for.
Return Values
Returns true if the object is contained in the map, false otherwise.
Notes
Note
Like isset(), this method returns false if the value associated with object is null, even though the object is still contained in the map.